RE: updating the RTC automagically

Ulrich Windl (Fabian.Frederick@prov-liege.be)
Mon, 22 Nov 1999 08:38:03 +0100


> Wel, well. How do you explain that the system clock is still the same
> after having used "date -s" several times? Should each system have a
> cron job to update the RTC via hwclock hourly, or maybe update it
> during system shutdown?
RTC regulation is a BIOS functionnality.It often updates RTC
datas every 30 sec or so. _but_ Linux ought modify the stuff by itself.
That's true some machines won't update RTC automagically but I think
it has been patched.

> Also: The kernel can probably do the job more precisely than a user
> daemon. (I'm talking about fractional seconds)
We need that stuff but also, for Y2K instance, some program
comparing OS - BIOS - RTC date in RT so we can incriminate the right
side.

Regards, Fabian

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